dapl_cno_util.c revision 9e39c5ba00a55fa05777cc94b148296af305e135
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2002-2003, Network Appliance, Inc. All rights reserved.
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
*
* MODULE: dapl_cno_util.c
*
* PURPOSE: Manage CNO Info structure
*
* $Id: dapl_cno_util.c,v 1.6 2003/06/13 12:21:02 sjs2 Exp $
*/
#include "dapl_ia_util.h"
#include "dapl_cno_util.h"
#include "dapl_adapter_util.h"
/*
* dapl_cno_alloc
*
* alloc and initialize an EVD struct
*
* Input:
* ia
*
* Returns:
* cno_ptr, or null on failure.
*/
DAPL_CNO *
dapl_cno_alloc(
IN DAPL_IA *ia_ptr,
IN DAT_OS_WAIT_PROXY_AGENT wait_agent)
{
DAPL_CNO *cno_ptr;
cno_ptr = (DAPL_CNO *) dapl_os_alloc(sizeof (DAPL_CNO));
if (!cno_ptr) {
return (NULL);
}
/* zero the structure */
(void) dapl_os_memzero(cno_ptr, sizeof (DAPL_CNO));
/*
* Initialize the header.
*/
cno_ptr->header.provider = ia_ptr->header.provider;
cno_ptr->header.magic = DAPL_MAGIC_CNO;
cno_ptr->header.handle_type = DAT_HANDLE_TYPE_CNO;
cno_ptr->header.owner_ia = ia_ptr;
cno_ptr->header.user_context.as_64 = 0;
cno_ptr->header.user_context.as_ptr = NULL;
dapl_llist_init_entry(&cno_ptr->header.ia_list_entry);
dapl_llist_init_head(&cno_ptr->evd_list_head);
dapl_os_lock_init(&cno_ptr->header.lock);
/*
* Initialize the body
*/
cno_ptr->cno_waiters = 0;
cno_ptr->cno_ref_count = 0;
cno_ptr->cno_state = DAPL_CNO_STATE_UNTRIGGERED;
cno_ptr->cno_evd_triggered = NULL;
cno_ptr->cno_wait_agent = wait_agent;
(void) dapl_os_wait_object_init(&cno_ptr->cno_wait_object);
return (cno_ptr);
}
/*
* dapl_cno_dealloc
*
* Free the passed in CNO structure.
*
* Input:
* cno_ptr
*
* Output:
* none
*
* Returns:
* none
*
*/
void
dapl_cno_dealloc(
IN DAPL_CNO *cno_ptr)
{
dapl_os_assert(cno_ptr->header.magic == DAPL_MAGIC_CNO);
dapl_os_assert(cno_ptr->cno_ref_count == 0);
/*
* deinitialize the header
*/
/* reset magic to prevent reuse */
cno_ptr->header.magic = DAPL_MAGIC_INVALID;
(void) dapl_os_wait_object_destroy(&cno_ptr->cno_wait_object);
dapl_os_free(cno_ptr, sizeof (DAPL_CNO));
}
/*
* dapl_cno_trigger
*
* DAPL Internal routine to trigger the specified CNO.
* Called by the callback of some EVD associated with the CNO.
*
* Input:
* cno_ptr
* evd_ptr EVD triggering
*
* Output:
* None
*
* Returns:
* None
*/
void
dapl_cno_trigger(
IN DAPL_CNO *cno_ptr,
IN DAPL_EVD *evd_ptr) /* ARGSUSED */
{
/*
* In Solaris uDAPL the CNO is triggered in the kernel
*/
}